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1994 6.5td gmc2500hd single cab 4x4 5 speed Manuel 355,000k
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I am Planning on changing my nv4500 transmission oil in my 1994 k2500 6.5 diesel and am looking to use pennzoils 75 90w gl4 transmission oil. Has anyone used this oil in the past in there nv4500 and was it a good choice?
Bottle Liquid Solution Fluid Ingredient

:photo of oil:
 

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I have never used that product. I guess by the lack of replies. Nobody else has either.
I dont see why you could not use it in a NV4500.
GL4 Synthetic oil is spec for 4500. The lube is also labeled for manual transmissions, not axles. So it would not have the EP additives like GL5 has, that eat up syncros.
Many people use similar Redline MT85 GL4 in NV4500 with no problems.
 
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